Time control mechanism



March 14, 1933. N, 0. mm 1,901,362

TIME CONTROL MECHANISM Filed April 16, 1930 INVENTOR. il/Erma 0271 07 ATITORNEYS.

Patented Mar. 14, 1933 UNITED STATES NORMAN O. TREIN, OF LOS ANGELES, CALIFORNIA vTIME CONTROL MECHANISM Application filed April 16,

This invention pertains to a time controlled mechanism adapted to be readily attached to time pieces already on the market, and also adapted to be used as an independent mechanism.

One obj ect of theinvention is to provide improvedineans for convenient attachment to an ordinary alarm clock which will control an electric circuit in such a manner that an electrically operated trip may be actuated by said circuit to stop or put into operation any independent mechanism, machine or device with which it is connected.

More specifically the invention relates to an improved electric switch which may not only be used in combination with an alarm.

clock, as aforesaid, but may also be advantageously used in other situations. no The electric switch provided by this inven and may be used to turn off a radio at a predetermined time, thus enabling a person who desires to leave the radio set in operation at the time he retires for sleep to permit the sound or music produced by the radio to induce sleep and after a sufficient length of time to insure that this desired result has been produced the device will automatically shut off the radio from operation.

Other objects, advantages and features of invention may hereinafter appear.

Referring to the accompanying drawing which illustrates what is at present deemed r to be a preferred embodiment of the invention,

Fig. 1 is a back view of an alarm clock showing the device attached thereto.

Fig. 2 is a section taken longitudinally through the device itself on line 22 of Fig. 1.

Fig. 3 is a section taken on line 3-3 of Fig. 1.

Referring in detail to the accompanying v drawing, the clock casing 5, and clock alarm spring 6 may be of the usual construction. In some cases the usual alarm spring shaft 7 will also be employed but in other cases it may be necessary to provide said shaft m with an extension projecting a short distance '7 beyond the back of the clock casing.

16 which are provided with nuts tion may be readily connected with a clock,

1930. Serial No. 444,793.

Attached to said alarm spring shaft 7 is a radial operating arm 8 and also a manu ally operable resetting arm 9.. Said operating arm 8 is positioned to engage a movable switch arm 10 of insulating material which is, pivoted at substantially its mid-length to the clock casing 5 by means of a pivot stud 11. By the side of switcharm 10, in a spaced, generally parallel relation thereto, affixed switch arm or stationary switch base member 15, also of insulating material, is secured to the clock casing by any suitable means as by the screw threadedstudzs 1 The movable switch arm 10 carries at one end a contact 100 and at its other end a ,contact' 1003,, while the stationary switch member 15 carries at one end a contact 150 and at its other end a contact 15d.

A small tension spring 20 has one end attached to the switch arm 10 and its other end anchored in any suitable manner, being shown as attached to the stationary'switch member 15., This spring is attached to the movable switch arm 10 at a distance from its pivot 11, the strength of said spring being only such to bring the contacts 10d and 15d into engagement with each other when it is permitted to do so, it not being so strong as to overcome the action of alarm spring 6- which at times opens the contacts 10d and 15d and brings together the contacts 100 and 150.

The contact 100 is connected with the line wire 25 by means of the wire 23, and thecontact 150 is connected with the wire'24 of the battery 27 of the radio. The contact- 10d, by means of wire 28 is connected with the line wire 25, and the contact 15d, by means the wire 29 is connected to the radio 30. A switch 40 is provided on the wire 23 and a switch 41 controls the circuit through wire 28. The various circuits are completed by providing the additional line wire 35 which is furnished with a branch wire 36 leading to the battery 27. The radio set 37 is provided with the receiving compartment 30.

In operation, assuming the switches 40 and 41 to be closed, the alarm may be set to release the alarm spring 6 at the desired time thereby to cause said spring at such time to operate the shaft? and radial arm 8 secured thereto. The operation of said arm 8, the free end of which engages the switch arm 10 below its pivot, Willcause the contact points 100 and 150 to be brought together thus closing the circuit to the radio battery 27, at the same time separating the'contacts d and d thus opening the circuit through the 10 radio and stopping the operation thereof presumably at anhour somewhat later than the person setting the alarm expects to have i fallen asleep.- I

I claim: i a 15 In an electric switch, a'pair of cooperating switch arms arranged in a generally parallel relation to each other, each of said arms carrying at each end a contact which is directed toward and l is adapted to engage ithe corresponding contact on the other arm,

means to support one of saidarms in a stationary manner, means to pivotally support the 1 other of said arms between its ends, yieldin means tending to draw the end portions 0 said switch arms toward each other at one :end of the switch and thus: close the 'c'on'tacts at'that end of the-switch while open-' ing'ithe contacts at the other end ofthe switch, meansto operate the switch in opposition to said yielding means to close the last recited contacts and open the other set of contacts,

said switch-operating means consisting of a 7 spring arm, :and a clock operatively related to said spring arm by meansof a stem oper- 3 able by the clock and located between said switch arms. I I

In testimony whereof I hereunto afi'ix my signature. a d NORMAN O. iTRE-IN. 

